Finland weather in September 2025
Finland weather in September 2025
Day
14 °C
Night
7 °C
Sea
7 °C
Precipitation
57 mm
in month
Rainy days
11 days
in month
Daylight
13 hours
average
Sunshine
4 hours
average
Humidity
84 %
Day
14 °C
Night
7 °C
Sea
7 °C
Precipitation
57 mm
in month
Rainy days
11 days
in month
Daylight
13 hours
average
Sunshine
4 hours
average
Humidity
84 %
Overview: FinlandFinland is a country of natural beauty, enchanting landscapes, and vibrant cultural experiences. Immerse yourself in the stunning wilderness of Finnish Lapland, where you can witness the magical Northern Lights, go husky sledding, and visit the home of Santa Claus in Rovaniemi. Explore the vibrant capital city of Helsinki, with its modern architecture, fascinating museums, and vibrant food scene. Experience the tranquility of the Finnish lakes, go hiking in the national parks, or enjoy the unique Finnish sauna culture. Finland offers a perfect blend of natural wonders, cultural richness, and warm hospitality that will leave you with unforgettable memories.
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Weather overview and FAQs
Weather overview
In September in Finland, the average air temperature ranges from 14 °C (57 °F) during the day to 7 °C (44 °F) at night. There are 11 days of rain on average, where the rainfall is 57 mm (2.24 in).
Is September a good month to visit Finland?
Finland can be visited in September - the weather will be moderate. A relatively low temperature of 14 °C (57 °F) may be ideal for walking or outdoor activities, but some people may have a different idea of the holiday. The temperature of 7 °C (44 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
What is the temperature in Finland during the day in September?
The average daily temperature in Finland in September is 14 °C (57 °F). Don't forget a sweater and light or normal jacket, but also pack light clothing in case the temperatures are above average. The weather at this time can be somewhat changeable and a wide range of clothing can become handy.
How long is the day (from dawn till dusk) in Finland in September?
The length of daylight in Finland in September is 13 hours.
How many days of precipitation on average can I expect in Finland in September?
There are 11 days, which are rainy in September in Finland, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.5 days of the week, or in general - 36 % days.
Is there a dry season in September in Finland?
No, September is not a dry month in Finland, expect rain approximately 11 days in a month.
What is the rainfall intensity in September in Finland?
There is precipitation of 57 mm (2.24 in) in September in Finland, which means 2 mm (0.07 in) rainfall per day on average.
Is the temperature rising or falling in the course of time in Finland in September?
During September in Finland, the day temperatures are decreasing - from 17 °C (62 °F) at the beginning of the month to 11 °C (51 °F) at the end of the month.
How many hours of sun to expect in Finland in September?
There is an average length of sunshine of 4 hours per day in Finland in September.
How windy is Finland in September?
An average wind scale that can be expected in Finland in September is 3.
Is there a wet season in Finland in September?
No, there is no wet season in September in Finland - you can expect 11 days of rain during the month.
Is Finland rainier in September than in October?
No, in Finland in September it does not rain more than in October.
What is the humidity in Finland in September?
In Finland in September, expect humidity around 84 %.
Is the weather in Finland warmer in September than in August?
No, in Finland in September the temperature is not higher than in August.